Kallayawat's (or Kwang as she likes to be called) place is very convincingly located just steps from the Udom Suk BTS Station. That makes it very easy to go anywhere the BTS and MRT systems will take you. You can also take BTS and connect to the Airport Link to go to/from the airport (which takes approximately 1.5 hrs) without having to fight with the ground traffic.
I stayed in the double room at Kwang's but she also has a bigger room with 2 bunkbeds that sleep 4. I was her only guest during my 11 nights stay except for 1 night when the other room was occupied. She keeps her place very clean and my bed was very comfortable with 2 big pillows , a back support pillow and a body pillow. The AC in the room delivered enough cooling to more than counter the heat outside however a pump had to kick in to drain the condensation accumulated in a reservoir so there is a bit of noise when it does that once in awhile.
Kwang designated a fridge for the guests and she stocks it with all kinds of treats, fruits, bottled water etc free of charge and she replenishes it as soon as I took something. She also offer a free coffee/tea station.
Kwang and her husband Joe are the most hardworking couple I have seen. They are always out doing something and therefore I basically get the entire place to my own most of the time.
Finally, the most memorable time of my stay would be the free Pad Thai cooking class she offers for long term guests. I will take this newly learnt cooking skill and practice on all my friends and families when I go back to Canada!
There is no doubt I will return to Bangkok and when I do I will be staying with Kwang.